I jump on this boat 8 months later as I've got a similar issue I'm afraid :(
Wordpress Version 4.0
All in one SEO Version 18.104.22.168
Well, General Settings (Site Title and Tagline) seem overriding home page meta description and title.
Not better destiny for other pages, they have the same problem unfortunately just a pretty more random description and a meta title not sure where is coming from? It seems auto-generated!
Everything sounds like we missed something need to be setup.
Thanking you in advance!